Radiation-related occupational cancer and its recognition criteria in South Korea

Table 1 Number of workers and exposure dose (mSv) according to occupation type in Korea

Year		2010		2011		2012		2013		2014
Category		Number of workers	Mean dose	Number of workers	Mean dose	Number of workers	Mean dose	Number of workers	Mean dose	Number of workers	Mean dose
Radiation workers	Medical institutes	3833	0.99	4133	0.96	4376	0.87	4734	0.73	5038	0.55
	Industry	5464	0.10	5456	0.03	6352	0.07	5842	0.16	5237	0.02
	NDT	5852	2.43	6075	2.39	6792	3.43	7166	3.87	7530	2.37
	Production and sales	1243	0.67	1573	0.53	1563	0.85	1702	0.41	1912	0.29
	Research institutes	2062	0.07	2139	0.05	2232	0.03	2198	0.03	2183	0.02
	Educational institutes	4876	0.05	4954	0.05	4816	0.04	4788	0.04	4521	0.06
	Public institutes	466	0.02	827	0.61	872	0.57	932	0.42	961	0.41
	Military	236	0.05	241	1.81	264	0.02	280	0.03	264	0.08
	Nuclear power plant	13,236	1.20	14,758	0.80	15,023	0.73	14,780	0.82	14,253	0.58
	Total	37,268	0.96	40,156	0.81	42,290	0.96	42,422	1.07	41,899	0.72
Diagnostic radiation workers	Radiation technologist	18,722	1.21	19,791	1.16	20,523	1.01	21,636	0.94	22,419	0.85
	Physician	11,661	0.34	12,622	0.36	13,076	0.32	13,738	0.32	14,950	0.31
	Dentist	12,822	0.16	13,849	0.18	14,424	0.15	14,905	0.15	15,951	0.15
	Dental hygienist	6110	0.13	7088	0.15	7727	0.12	8064	0.12	8912	0.12
	Diagnostic radiologist	1468	0.41	1545	0.29	1456	0.32	1448	0.31	1475	0.24
	Nurse	2177	0.4	2936	0.37	3171	0.33	3397	0.32	4891	0.22
	Nursing assistant	817	0.3	927	0.26	873	0.24	846	0.3	1081	0.19
	Medical assistant	161	0.3	198	0.34	168	0.55	222	0.49	329	0.34
	Others	1676	0.47	1474	0.42	1517	0.33	1676	0.68	1088	0.34
	Total	55,614	0.58	60,430	0.56	62,935	0.48	65,932	0.47	71,096	0.41

Source: 2015 Nuclear Safety yearbook [5] and 2014 Occupational Radiation Exposure in Diagnostic Radiology in Korea [8]
NDT non-destructive testing

ISSN: 2052-4374